JPS648594A - Read only memory - Google Patents
Read only memoryInfo
- Publication number
- JPS648594A JPS648594A JP16424587A JP16424587A JPS648594A JP S648594 A JPS648594 A JP S648594A JP 16424587 A JP16424587 A JP 16424587A JP 16424587 A JP16424587 A JP 16424587A JP S648594 A JPS648594 A JP S648594A
- Authority
- JP
- Japan
- Prior art keywords
- logical
- depletion
- ion implantation
- polarity
- power consumption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Read Only Memory (AREA)
Abstract
PURPOSE:To reduce power consumption by switching the polarity of a readout output signal depending on whether depletion ion implantation is applied to a logical 0 of data or a written program or depletion ion implantation applied to logical 1. CONSTITUTION:When the number of logical 0s of data or program written in depletion ions is less than the number of logical 1s, the depletion ion implantation is applied to transistors 4-9 corresponding to the logical value in the ROM cell 2. When the number of logical 2s is less than the number of logical 0s, the depletion ion implantation is applied to the TRs 4-9 corresponding to the logical value 1. Then the polarity of the readout signal is inverted from the ROM 2 corresponding to the logical value and the depletion transistor and the enhancement N-channel transistor. Thus, a through-current is reduced regardless of the storage content to reduce the power consumption.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16424587A JPS648594A (en) | 1987-06-30 | 1987-06-30 | Read only memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16424587A JPS648594A (en) | 1987-06-30 | 1987-06-30 | Read only memory |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648594A true JPS648594A (en) | 1989-01-12 |
Family
ID=15789435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16424587A Pending JPS648594A (en) | 1987-06-30 | 1987-06-30 | Read only memory |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648594A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0271000A2 (en) * | 1986-12-06 | 1988-06-15 | BASF Aktiengesellschaft | Flat material for optical laser recording |
KR20000073002A (en) * | 1999-05-04 | 2000-12-05 | 윤종용 | ROM programmed with metal patterning to shorten TAT |
-
1987
- 1987-06-30 JP JP16424587A patent/JPS648594A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0271000A2 (en) * | 1986-12-06 | 1988-06-15 | BASF Aktiengesellschaft | Flat material for optical laser recording |
KR20000073002A (en) * | 1999-05-04 | 2000-12-05 | 윤종용 | ROM programmed with metal patterning to shorten TAT |
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